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Winter Storm Gia could bring snow to Cape and Islands tomorrow

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USCAPEWEATHERAF

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Models bring a chance at snow after 18z tomorrow afternoon.  Right now the NWS has a 20% chance for snow over the area, while I think it is something near 40% right now.  I am a little more bullish due to short range guidance getting more amped up in the southern stream disturbance and exiting the northern stream energy faster to the north of the storm.  This energy is causing a confluent flow over the northeastern CONUS allowing the DC winter storm to slide out to the southeast of the region, however, latest short-range guidance the HRRR and RAP 23z runs showing a potential for a deformation band to reach the South Coast of RI and MA.  Should this happen, amounts could vary through a dusting to as much as 6" or more, all depends upon where that band can setup.

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